Railway block system.



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' whereby it ie made im CHABLIS W. BPEBNADIB. 0F OAX PABX, ILLINOIB.

RAILWAY BLOCK BYBTIH.

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To all whom it may concern:

Be it known that I, Cininws W. Sres- Naaiia, a citizen of -the United States, residing at Oak liirk, in the bounty of Cook and State of Illinois, havo invented certain new and useful Im rovements in I lailway Block Systems, of wliiclithe following is a. speci- .cation This invention relates to safety appliances for railways, and has articular reference to devicesemployed in lock si nal systems ible or one train io enter a block occupied b n another train and whereby rear-end 4col isions will be avoided.

For a full understandin of the invention, reference is to be had to t e accompanying drawings, in which,

. Fi ure 1 is a diagrammatic representation of a block signal system, substantially in accordance vwith this invention Fig. 2 is a similar view showing the saine invention applied to a railway crossing;'Fig. 8 represents a preferred embodiment of one of the movable contact devices hereinafter, de-

. scribed; Fig. 4 is a detail of the shiftable ahoe or slide associated with o ne of the rails. Fig. 5 is a vertical detail section on the line 6--5 of Fig. 1.

kThron hout the, following u.description and on t 'several figures of the drawings similar parts are referred to by like reference characters. Referring to Fig. 1, the numeral 10 indiatee a main line of a railway over which trains are presumed to be operated in the direction indicated by the arrow thereon. On said tlgure are re resented two block stations A and B, and it is to be understood that any number of such stations ma; Il:

employed and that the others 'wotd equipped and arranged the same as those indicated. Said stations may be any desired distance apart. At each station there would bo a device, such as indicated at 11 in the form of a bar associated with one of the track rails and normally projecting slightly above the top of the rail whereby a Saingcar wheel will cause the same to be epressed. When the shoe 11 is thus depressed u contact point 12 carried or operated thi-roby will be brought into contact with u contact mint lit, closing a circuit from tlc niiiin wire 14 tliron v i branch wires 15 and 16 to a solenoid 17, t ie circuit being completed through a ground wire 18. When miem-ea Nov.1, 1910.

the solenoid 17 is energized `the armature thereof will be drawn so as to cause a contact poiit 20 to engae a contact point 2l v n.

when-by ii circuit wi becompleted from tho mum wire l't through branch wires 22 and 23 to a solenoid 24, the circuit, for instance, being completed through a ground wire 25.

The solenoid Q4 may be placed at any suitablepoint with .respect to the shoe 11 and is iidaptcd when lenergized to cause iil stop-incinln'i' .26 to be elevated into the path of n trip device carried preferably b the locomotive or car and to trip the nirrake mechanism thereof. The devices carried b thc locomotive .or car form no part of this l' invention and are not illustrated. As shown in this instance, the armature 24 of the solenoid 24 is connected to a lever 27 in such a in anucr as to cause the stop-member 26 to be elevated. It is to be understood, howcvcr, that the specific mechanical arrangement of devices to carry out the objects of this invention muy be varied to a great cxtcnt within thee-core of this invention and l do not desire to c limited except as may lwlrliciwlsitiitiled by thixiitnte of tdait. th

"ic sioc l u on .in en e first whcwl of apciir or ltzrainguwillb depressed, causing thc contact of the members 12 and 13, as already stntcd, and said shoe is long lenough to insure that at least one wheel of the train or car will remain in engagement therewith until thelast wheel has passed thcreovcr. While the train or car is passing over thc shoe l1, therefore, the circuit wi l y 17 und solenoid 24. After the lnetwheel, howl-vcr, hns left the shoe, the contacts l2 and 13 will be sep *ated by the restoration of the shoe to it: .iormal position by any suitable means, such ns ii spring 28'. The solenoid 17 will then be dencrigizi-d, but thc circuit will be continued through the wires 22 and' 2li and solenoid 24, maintaining thc stop 20 in its elevated position so as to prevent a succeeding cai' or train from be maintained through the solenoid entering the block which has now been en-A L" so v lui-t mentioned circuit. with the ione eil'e .,as' uhovo described ni connection with the the circuit will he' completed not onl B 074,7ie

branch circuit l5" und 16" und the solenoid 1T", whereby the armature ltl" will close the circuit through the contncts 20" and 2l" nml branch wires 22 und 23" und the solenoid 24" canning thc top .'t" to be lifted.

while thc train is passing v-tutioii ll and the contactev l2" und ll" nre held togcther,

thiou h the solenoid i7", as above describe but. ii so an additional circuit will. be coinpleted from theimiin line 1t through the wire 15* and wire 28 extending buck to stii tion A and whereb solenoid 20 will be ener- "ized, the circuit iii? completed through the ground wire 30. pon t e energization of t e aolenoid 29, the armature 19, common to both solenoids 1T and 2l), will he shifted so as to cause tli'e contact point 20 to enii aeontact 3l and whereby the circuit i be completed through ilie wire 28 and wire 23, maintaining the energization of solenoid 24, and holding the stop 26 elevated until the train has passed .station `When the hist wheel has left #hoe 11" of station li, the contacts 12" and 13" will break the circuit from the main linethrougli the brunch line 28 and whcieli' the soleiioitls 2t) and 21 will be dener i and the atop 2li will be permitted to rop. At this time the aecond train may enter the station or block A.

Aa described above, it being necessary for station B to.be reached in order to ad'ust the devieea at station A eo that a niet ing train or car may pass thereover, it has been found necessary to devise nicans whereby in the event that the tirst train is not canned to pasa atation B, as, for instance, if it is desired to pass upon u switch located between the stations reprebented at C, for the trip device 26 to be freed. The inovuble switch point 32 either carries or operates a contact. ioint 33 which, when the switch is o ien, wi l engage n continu. point :it to close t ic circuit. from thc inuiii line through the hriineh wires 3? a|..l 34', the hitter being connected to a oh-noid lli, connected to the ui'nuitnre lt), und huiiniz n function similar to that-of solenoid 2t. t'ter thc truin luis l entered the Mvitehl and the switch clim-ih the contact point 2,13 und 34 will ln'cnk the circuit 28 from Iation Il, leaving the main line open und the derivi-ii at station .t in such position as to prrinit theysin-eeeiling train to move tliereorer.,

In Fig. 2 is indicated n niuiilnr` arrange ment adapted to protect a railwa crossii assuming that a train is passin t e crossi on track l) in the direction in ieated by t arrow and it is desired to prevent a tri on the track E from crossin said track the lirst mentioned train will operate I shoe 11" closing the contacta 12 and l whereb the circuit will be comple! tliroagi the main lin'e 14 and branch wi 15 and 16 tothe solenoid 17. The solem 17' will cause the contacts 20' and 21 complete the circuit from the main l` through the branch wires 22' and 23e to 1 solenoid 24", causing the stop 26' to.be t viited to the position to sto the train track l). A nhoe l1'l saita l located the opposite side of the track ia arranl in sui-li u manner as to cause the-contacts and 13" to be engaged and com lete the t cuit from the main line throng the brai wires 15" and 28 to the solenoid 20. A the circuit, will be completed through same wires and contact. points 20 and l iiiaintaininf the circuit through the'solen` 24 while tic triiiii is passing over the sl 11". After the train has passed shoe l said shoe will be restored to its normal p4 tion breaking the circuit, whereby the si noida 29'* and 2-1 \vill"be denergizcd i thereafter rinittin the atop 2G to di' llavingt ius descri ed the invention, w is claimed as new is:

In a iuifety appliance for railway combination of a stop member, a aoleno to sct. the saine, a pair of solenoids 17 i '.20 with a coninion armature, a depressi shoe, means to energize solenoid l? c trolled by said shoe, means operativo said armature to energize solciioul Jl-l, nie to restore the shoe und tliereb to br the circuit through solenoid 1 after passage of a train, the circuit. throi solenoid .N heini.' continued a iiewnd |n'r.--ilile shoe, incnii.-4 controlled by the 1 oud shoe to minne the second nolenoid 2t, unid pair to shift iho eounnon arniaturi rem-.rpize solenoid 2t. uid huit inentio solenoid hein momentarily dei'lnei-gi during the uhiftin v of '.suid arnnitui-r.

I means to restore tie weeond shoe to hr the circuit. through solenoid .24 and 2t'.

lu trptiiuony whereof l allix in y sig ture in pref-'ence ol tuo witnesses.

, ytlllAltlille' W. SlllltNAlill Witnenaeil:

lloniiirr SULLIVAN, (iiiirrar Douro', 

